Bluetooth connectivity issues

[Yury-MonZon]

BT is not able to connect to external devices, scanning works fine.

[alchark]

Should be fixed with kernel commit flipperdevices/flipper-linux-kernel@f979fce - please confirm.

We also need testers from the community having an MT7921 based Bluetooth module to confirm that our fix referenced above doesn't break other devices

[Yury-MonZon]

Works fine on FlipperOne board.
This PR adds BT audio and BT HID devices support #65